Island



7 March 8, 1932.. w. J. scoT'r STOP MOTION FOR DRAWING FRAMES Filed May 29, 1950 2 Sheets-Sheet l ATTORNEYS.

March 8, 1932. w J SCOTT STOP MOTION FOR DRAWING FRAMES Filed May 29, 1930 2 Sheets-Sheet 2 IN V EN TOR. %//Z JSaoi A TTORNEYS Patented Mar. 8, 1932 TES PATENT OFFICE VWALTER J. score, or woonsocxnr, nnonn ISLAND "STOP MOTION DRAWING FRAMES Application filed' May- 29, This inventioni relatesto. an improved stop motion for drawing framesand the like and has particular-reference to an electrically operated stopmotion which ispositioned betweenthe draft rolls and the sliver supply. The object of this invention ;is to provide a stop motion which will operate whenever a sliver 'breaks,' orlits tension is slackened to apredeterrnined de ree.

A'furtherobject oft he invention is to provide a sliverguid'e plate which is provided with a plurality of "sliver guiding opemngs, each opening having a ceope-rating closing device. maintained but of circuit-closing position by the sliver traveling thru itsopening, the closure member to be-relea'sed when its individual slivefbreaiks or-slackensto a predetermined degree to" close the circuit and stop the machine. I 20. VVith these and other objects in view,'.the invention consists of certain v novel features of construction, as will be 'more fully described, and' particularly pointed out in the appended claims. v e v I In the accompanying drawings: Fig. l is a viewipartially in section illustrating the travel of the slivers and the general arrangement of stop device relative to the operating mechanism. I v

' Fig. 2i-saffro1it View showing ajpair of my improved stopf p'lates as appliedto. one form of drawingframeij f I Fig. 3' is' a View of the discharge side of one ofthese plates, showing thecircuit closing gates hingedto'theguide plate.

Fig; lis a s'ection on' line Hot Fig. 3, showing-some of "the [circuit-closing feeler gates ashei'ng slupporte'don ,th'e travelin slivers and one thatjhas'been permitted to 40 drop andc'lose' thepircuit by thebr'eaking of the-sliver j Fig. 5ji's aperjspective 'view of one of the f-eelerf'gatesdetached;"f I Fig. Sis a p'ers'pec'tive View of one of the brackets'infwhichthe sliver guide plate is adjustab'ly mounted. T j F ig, 7 isafto'p viewshowing the general arrangement of the drawing 'framein which sixftops 4 are being,emfte d and fblended together.intoa'single sliver;

1930. Se'rialNo. 458,292.

Fig.8 is a diagrammatic view illustrating the electrical mechanism arranged to stop the machine when one of the feeler gates drops into engagement with the contact.

It is found the operation of gill boxesor other similar drawing frames that where;a plurality of slivers or tops, say six (more or less), are led from cans orothersource of supply 'fthru a set of draft. rolls to be blendedltogether into a single sliver and then delivered to'a receiving can'or' wound upon a spool,;that one of these sixsep'arate slivers often breaks down leaving a thin place in the stockcausing a considerable waste of valuable material] To obviatethis difiiculty, I have built a guide plate'having guiding openings for all of these separate'topsor slivers which are employed to form the set that are blended into a single sliver; and I have provided a feeler gate or member arranged to guardeach of theseopenings. by riding upon its sliver as it passes thru the opening and if one of these slivers shouldfbreak or become s'lackened to a predetermined degree, its particular feeler member would drop into engagement with an electrical contact'memher to complete an electric circuit and stop the machine and so prevent 'fur'therfeeding action of the machine until after the slivers have been properly pieced up. Alsoin order to obtain the required tension on the running slivers or tops, each of which 'is a rope of loosely laid fibers, I form the openings in the plate of a size a little'smaller than this rope so that the draft rolls in drawing the same thru theselopenings places the rope under a certain amount of tension which supg ports the feeler gate that rides thereonand holds it outof engagement with the electrical contact so long as this tension is maintained, but *whe'n'this tension slackens by excessive drawing out, or breaking of the traveling sliver'than this feeler is permitted to drop 7 and complete the circuit to stop the machine;

and thelfollowing is a detailed description of 5 the present embodiment of my invention and showing one arrangement ofparts of stop device as applied to a gill'box or other drawing .frame 7 by which these advantageous results may be 'a'ccomplished'z j rolls over the srhar-il ian adwicedbn thepress rolls 17 into the receiving can 18 or Wound upon a spool or otherrecieiving means (not shown).

- If any one of these six slivei's should break down or become accidentally drawn out to an excessive degree and thisresult were not dis-- covered by the 'opera tor,'thin places wouldbe formed in the stock'which would then become waste. To obviate the forming-of these thin places in this stock,"I have provided a stop device for e'achjset of slivers or tops, oneform of which,as herein shown, comprises a plate 19 which is supported on the brackets 20 from V the apron 12 towhich the bracketsare bolted asat 21. Thesefbracketsare preferably providedwith a vertically disposed slot 22 "and a bar 23 extend aCIfOSS between the brackets, which is bolted to theibrackets thruthe slot by mea'nslof bolts24 whereby this barwith its plates 19,' may be adjusted vertically to best accommodate the feedof the difierent'sliv'ers mum rear draft rolls. V I I f' This guide plate 19'isprovided With'a'set of holes 25, one fo ests of the slivers or re es,

' which holestaper" toward thedelivery' ace of the plate,'the smaller diameter ofthe hole being preferablyof asize a little less than the size of the loose fibers in the rope or sliver 11 which extends therethrough tobe engaged by the draft rolls, which exertsja slight friction V 'ordrag on each sliver'or ropehs it'is pulled openings thus exerting a predeter thrufthese mined "tension betweenth'e delivery plat-g i the draft rolls.

@On the delivery side of 'this plate an d over reachf'of these sliver guiding openings,"Ihave formed a boss 26 iniwhich' a 'feeler; plate or ate27 'is hingedly mounted on. a hingepin 28; The free edge of this feeler is arranged to'ride: upon the upper surface of sliver while it. is underterision and when any one 'of' these slivers breaks or becomes ffunduly slack its feeler gate is naturally permitted to drop into engagement' with the contact bar "29,'which{jbar is in the electric circuit,pr'e sently described; 7 V a t r This contact bar 29jissupported from the plate 19 by'means of boltsBO and by adjusting these bolts-in andout the bar may be adjusted towards and fronithe plate to the de'sired position and this bar 29fis insulated fro n'the plate" by means of suitable washersiil 'jon these bolts 30.

'T 'These'feeler gates '27fareleachgprovided orinoperativeposition during the running 'of'this lesser number of slivers than a fu s -controla-release latch 34 on the shipper rod 38' and thru the belt fork 39 the be ishown)ism oved from the ti htpulley tllo'n "to theloose pulley 41 to step t e machine.

and inexpensive in construction, is very ef-' ers, and movable mem member being affected in ItS SIOtiQQby U ing" for closingthe circuit and stoppin ityb ,t a lii f e s; ber for each opening'mounted in s'aid with a laterally-extending portion 32 which when released and permitted to fall by the slackening of the slivers, will enga e the bar 19 and complete the circuit, or i for any reason it is desired to run a number of these slivers less than the number of 'ding openings in the plate, the unused f dler member maybe turned fbackor supported in raised set. 1 1 One means of connecting up this stop device with; the electric circuit is illustrated in Fig. 8, in which a solenoid 33 is arranged to 38, whereby when the feeler 27 is permitted to fall, into engagement with the contact bar 2 9 the circuit is closed thru thewire 351:0 foperatethesolenoijd 33' to release the'latch 314i and permit the'shipper under action of the tension spring 37 to throwtheshipfir'mtl 9i 7 My improved stopmotion .is very simp e fective'in itsoperation and by its use the machine'willstop if any one of a pluralitybf slivers of a setshouldbreak or become excessively "slack and so prevent thin places fin 3 I i h -r e v The'fo'regoing description is directed solely towards the construction illustrated, but 'I desire it tov be understood that I reserve the privilege of resorting to allthe 'm'ecli'anical changes to which the'dev'ice is susce tible, the invention being defined and limiteil'only the terms ofithe appended claims. I

Iclaim'f 1 V 1. In a drawing frame, an'electric ;ci1fdui't, at stop motionfin said circuit, sliver supply means, sliver receiving'means, draft rolls ntefrmedia'te said supply andjreceiVingmeanS,

said stop "motionincluding a sliverrguid'e located I intermediate the draft; l rolls andfilie 1 supply means, a plate having idingjofienings for each of 'a plurality of raveling 314vbers mounted 'on said plate "adjacent said opeiiingsyeach rnoygbl e running tens on of the sliver thru its openthe machinev when the tension of the "ensapredetermineddeg e; I V i a v pelectrc cm; 3,20 a stop motion in said circuit, sl ver um;

" 2, In a drawing jfraine,

means, sliver receiving means, for'the sliver intermed ate said receivin'g means, said stop motion, inclil I 0 a sliver' uide platelocated intermediate draft rolds and supply means, said late ing a guiding opening for each 0 a pluraland'a movablefinjew and 'afiected' in its action 2 guide member,

the sliver to close the circuit and stop the machine.

3. In a" stop motion for drawing frames,

way thru the machine,-a feeler gate mountedon said guide member above each opening and supported in raised position on the sliver traveling through said opening while'under tension, and an electrical contact on said member, said gates being released upon slackening of the supporting sliver to drop into engagement with said contact to close the circuit and stop the machine.

4;. In a stop motion for drawing frames, an electric. circuit, a guide member in said circuit having a plurality of openings, said openings being of a size to exert a tension on the slivers in being drawn therethrough, a feeler gate mounted in said guide member above each opening andsupported in raised position on the traveling sliver while under tension, and an electrical contact on said said gates being released upon slackening of the supporting sliver to drop into engagement with said contact to close the circuit and stop the machine.

5. In a stop motion for drawing frames, an electric circuit, a guide. plate in said circuit having'openings thru which different slivers are guided, a feeler gate hinged on the delivery side of said plate aboveeach of said openings; each having its free edge supported in raised position on the traveling sliver while under tension, and an electrical contact on said plate,said' gates being released upon slackening of the supporting sliver to drop into engagement with said contact to close the circuit and stop the machine.

6. In a drawing frame, an electric circuit, a stop motion in said circuit, sliversupply means, sliver receiving means, said stop motion including a sliver guide plate located intermediate said draft rolls and supply means, said plate having a guiding opening for each of a plurality of traveling slivers, a movable member mounted on said plate adjacent each opening carried by said plate and moved upon the breaking of the sliver passing through its opening to close the circuit and stop the machine, and means for adjustably mounting said plate on said frame.

7. In a stop motion for drawing frames,

an electric circuit, aguide plate in said circuit having openings thru which different slivers areguided, a feeler gate hinged on the delivery side of said plate above each. of said openings, each havingits free edge supported in raised position on the sliver traveling through its opening while under tension, an electrical contact on said plate, said gates being released by the slackening of their supporting slivers to dropinto engagement with said contact to close the circuit and stop the machine, and means for adjusting said contact on said plate.

8. In a drawing frame, an electric circuit, a stop motion in said circuit, sliver supply means, sliver receiving means, draft rolls intermediate said supply and receiving means, said circuit including a fixed contact member and a movable contact member engageable therewith, said contact members being independent of said rolls, said fixed contact member being mounted below the traveling sliver,'and said movable contact member being mounted above said traveling sliver and normally resting thereon, whereby said movable contact member is normally sup-- ported upon said'traveling sliver and out of engagement with said fixed contact member.

9. In a drawing frame, an electric circuit, a stop motion in said circuit, sliver supply means, sliver receiving means, draft rolls intermediate said supply and receiving means, said circuit including a fixed contact member and a swinging contact member engageable therewith, said fixed contact member being mounted below the traveling sliver, and said swinging contact member being independent of and spaced from said rolls and mounted above said traveling sliver and normally resting thereon, whereby said swinging contact member is normally supported upon said traveling sliver and out of engagement with said fixed contact member.

10. In adrawing frame, an electrical circuit, a stop motion in said circuit, sliver supply means, sliver receiving means, draft rolls intermediate said supply and receiving means, said circuit including a fixed contact member and a movable contact member engageable therewith, said contact members being independent of said rolls, said fixed contact member being mounted on one side of the traveling sliver, and said movable contact member being mounted on the other side of said traveling sliver and tending to move towards said fixed contact member and resting against the sliver, whereby said movable contact member is normally held out of engagement with said fixed contact member by said traveling sliver.

In testimony whereof I affix my signature.

WALTER J. SCOTT. 

